Im Chang-jung

Eun-sik

Song Ji-hyo

Kyung-ah

Choi Sung-kook

Choi Sung-kook

Shin Yi

Kyeong-joo

Lee Sang-yun

Gi-joo

Yoo Chae-young

Yoo-mi

Lee Hwa-sun

Young-chae

Lee Si-yeon

Dae-hak

Hong Ji-young

Bo-ra

Kim Myeong-kyu

Pervert

Choi Hyun

Sang-woo

Park Young-soo

Jong-min

Song Jae-ryong

Detective

Park Seo-hyeon

Nurse 1

Park Jae-woong

Nurse 2

Kim Tae-ho

Doctor 1

Lee Jong-rae

Doctor 2

Yoon Sul-hee

Prostitute

Lee Jung-hoon

Hall Anouncer

Ha Ji-won

Eun-hyo

Kim Hyeong-il

Pervert

Kim Chung

Kyeong-ah's Mother

Denis Kang

Self

Lee Jin-seong

College Boyfriend

Kim Yong-soo

Eun-sik's Opponent

Song Seung-yong

JK Youn

(uncredited)

Sin Eunjeong

Ji-hyeon

Choi Sung-woong

Security